Orbital period : 8.25 years
NASA/JPL elements
IAU/MPC elements
On 2011 Apr 07 23h52 UT by Jean-Francois Soulier
(Copyright Jean-Francois Soulier)
117P/Helin-Roman-Alu
Orbital period : 8.25 years
NASA/JPL elements
IAU/MPC elements
On 2011 Apr 07 23h52 UT by Jean-Francois Soulier
(Copyright Jean-Francois Soulier)
| Nuclear magnitude (m2) | 19.7 |
| m2 standard deviation | 0.1 |
| Aperture radius used for m2 | 4 " |
| r (dist/Sun) | 4.875 AU |
| d (dist/Earth) | 4.511 AU |
| Right ascension | 08 28 06.50 h m s |
| Declination | +28 25 54.1 ° ' " |
| MPC report | COD C10 CON JEAN-FRANCOIS SOULIER [jean-francois.soulier2@wanadoo.fr] OBS J.F. Soulier MEA J.F. Soulier TEL 0.255-m f/3.6 Newtonian reflector + CCD ACK MPCReport file updated 2011.04.07 and 08 AC2 jean-francois.soulier2@wanadoo.fr NET USNO-B1.0 0117P KC2011 04 07.99455 08 28 06.50 +28 25 54.1 19.6 N C10 0117P KC2011 04 08.01691 08 28 06.60 +28 25 51.1 19.8 N C10 |
| Instrument type | Newton |
| Instrument aperture (0=naked eye) | 254 mm |
| Instrument focale length | 900 mm |
| Instrument focale/diameter | 3.6 |
| Camera | ST7-XMEd |
| Sensor | CCD |
| Sensor size | 6.9 x 4.6 mm2 |
| Sensor pixels number | 765 x 510 |
| Sensor temperature | -20 °C |
| Binning | 1x1 |
| Mount | PERL-VIXEN |
| Autoguide | Yes |
| Exposure total time | 3600 s |
| Exposure details | 30 X 120s |
| Seeing | 3 |
| Moon elongation | 56 ° |
| Air mass | 1.54 |
| Observatory MPC code | C10 |
| Location | 77 |
| Reference stars catalog | USNO-B1.0 |
| Used softwares | ASTROMETRICA |
| Resulting picture sampling (scale) | 2.06 "/pix |
| Image processing | PRISMV8 APE DDP |
| Observation submission date | 2011 Apr 08 07h09m49s |
| Observation modification date | 2011 Apr 08 09h46m43s |
(Record n° 2413)